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Table 4 Correlations of journal IFs and citations with reporting quality

From: Evaluation of reporting quality of cohort studies using real-world data based on RECORD: systematic review

Items

Reporting

Journal IFs

Citations

Studies(n)

Median (IQR)

p-value

Studies(n)

Median (IQR)

p-value

R1.1a

Yes

Partly Yes/No

171

5

3.58(2.39,5.55)

3.19(1.56,4.94)

0.49

182

5

12(6,26)

12(4.5,15)

0.458

R1.1b

Yes

Partly Yes/No

125

51

3.71(2.46,5.52)

3.39(2.28,6.24)

0.841

134

53

12 (7,25.25)

12(4,25.5)

0.493

R1.2a

Yes

Partly Yes/No

110

66

3.85(2.45,5.56)

3.3(2.35,5.54)

0.446

117

70

12(5.5,24.5)

12.5(7,26)

0.602

R1.2b

Yes

Partly Yes/No

88

88

3.42(2.3,5.17)

3.79(2.46,6.11)

0.376

97

90

10(4.5,24.5)

15(7.75,26.25)

0.113

R1.3

Yes

Partly Yes/No

33

32

4.4(2.65,5.36)

4.65(3.3,8.62)

0.322

33

33

10(4.5,30.5)

17(7,39.5)

0.16

R6.1

Yes

Partly Yes/No

70

106

4.11(2.65,5.99)

3.24(2.26,5.22)

0.04 a

75

112

16(7,32)

10.5(5,19.75)

0.035 a

R6.2

Yes

Partly Yes/No

20

50

4.01(3.14,6.13)

4.15(2.38,5.99)

0.326

21

55

23(9,60.5)

15.5(6.75,27.25)

0.088

R6.3

Yes

Partly Yes/No

12

53

4.53(3.3,5.66)

4.4(2.9,6.73)

0.906

12

54

16.5(4.25,36.5)

13.5(5.75,35)

0.874

R7.1a

Yes

Partly Yes/No

25

151

4.07(2.78,6.8)

3.4(2.32,5.48)

0.116

28

159

17(9.5,43.75)

11(6,23)

0.02 a

R7.1b

Yes

Partly Yes/No

40

136

4.15(3.23,6.45)

3.24(2.23,5.49)

0.014 a

43

144

15(7,41)

11.5(5.25,23)

0.129

R7.1c

Yes

Partly Yes/No

20

156

4.58(2.82,12.43)

3.42(2.35,5.42)

0.036

23

164

19(12,66)

10.5(5,23)

0.001

R12.1

Yes

Partly Yes/No

145

31

3.94(2.55,5.71)

2.6(1.71,4.4)

0.004 a

153

34

12(6,27.5)

12.5(5.5,18.75)

0.534

R12.2

Yes

Partly Yes/No

61

115

4.07(2.62,6.21)

3.28(2.32,5.1)

0.072

65

122

14(7,29.5)

11(5,23)

0.276

R12.3

Yes

Partly Yes/No

28

37

5.16(3.61,8.46)

4.01(2.64,6.07)

0.086

28

38

15(4.25,51.5)

13(5,30)

0.559

R13.1

Yes

Partly Yes/No

101

75

3.95(2.62,5.71)

3.19(2.14,5.49)

0.119

107

80

11(5,23)

15(6.25,26)

0.628

R19.1a

Yes

Partly Yes/No

145

31

3.75(2.46,5.59)

3.15(1.95,5.49)

0.133

155

32

13(7,27)

8.5(3.25,15,75)

0.01 a

R19.1b

Yes

Partly Yes/No

54

122

4.02(2.59,6.51)

3.47(2.34,5.22)

0.135

58

129

15(8,30)

10(5,23)

0.099

R19.1c

Yes

Partly Yes/No

19

51

4.07(3.06,5.57)

4.15(2.45,6.29)

0.751

19

56

27(9,41)

15.5(6,27.75)

0.09

R19.1d

Yes

Partly Yes/No

112

64

3.68(2.42,5.6)

3.39(2.33,5.42)

0.476

118

69

15(8,29.25)

9(3.5,18)

0.001

R19.1e

Yes

Partly Yes/No

30

146

2.53(1.7,3.77)

3.98(2.55,5.66)

0.001

34

153

10.5(7.75,20.75)

12(5,25.5)

0.855

R22.1a

Yes

Partly Yes/No

44

132

3.91(2.38,6.45)

3.47(2.41,5.42)

0.582

44

143

14.5(7,31.25)

11(6,25)

0.469

R22.1b

Yes

Partly Yes/No

36

140

4.64(2.78,6.49)

3.26(2.33,5.19)

0.022 a

38

149

8(2,18)

14(7,26)

0.015 a

R22.1c

Yes

Partly Yes/No

83

93

4.4(3.03,6.21)

2.65(1.85,4.43)

<0.001

87

100

12(6.25,25.75)

12(6,25)

0.681

Total

≥ 50%

< 50%

65

111

4.2(2.97,6.02)

3.17(2.14,5.18)

0.002

72

115

16.5(8.25,36.5)

10(5,19)

0.004 a

  1. IFs, impact factors; IQR, interquartile range
  2. Journal IFs of 11 articles were unavailable and therefore not included in the analysis. Citations were obtained from Google Scholar on November 18.
  3. aNo significant difference after Bonferroni’s correction.